30 Aug
2020
30 Aug
'20
10:26 a.m.
On Sun, Aug 30, 2020, 10:03 AM Jules Richardson via cctalk <
cctalk at classiccmp.org> wrote:
On 8/28/20 12:40 PM, Al Kossow via cctalk wrote:
Most SATA and NVMe SSDs have a PBW or DWPD number that gives you an
indication of how long it will last. These numbers are usually normalized
to a JEDEC workload. From that you can often extrapolate to your workload
if you know it well enough... It is one of the things I evaluate for
Netflix's CDN....
SD and CF cards almost never do unless they claim industrial use. Ditto USB
sticks, but with more industrial models available.
Warner
Also, I discovered recently that there is a
maximum number of hours
measured in years on SSDs and systems will start throwing SMART
errors when that is exceeded. I have a few doing that now on systems
with minimal writes but lots of hours.
There are long discussions elsewhere of the dangers of using
non-industrial
rated CFs and SDs in storage applications.
I found it next to impossible to find information on what - if any -
technology a particular SSD uses to extend lifespan; while manufacturers
all compete on things like capacity and speed, very few of them seem
interested in telling us how long their product might last.